Model Number: JH-834 Brand Name: Nier Key Specifications/Special Features: Technical parameters:Voltage is supplied: UM-4 (GrAAA) x 2 festivalsOutput: 150mWFrequency range: 50 to 20,000Hz ±3dBExport: 320Hm, 150mW, 84 ±3dB

Controller size: 63 x 56 x 19mm

Weight: 40g (controller without battery)

Use in the temperature range from -20 to +50°C

Assemblages:

1. Please pay attention to the installation of the battery
2. According to correct instruct putting battery of the controller
3. As it shows LED gives out light for a long time or sound quality become poor, you need to change the battery as figure 6
4. Please take out the battery when the item is not in use
5. May need small instruments